1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Resources.h"
#include "SkBitmap.h"
#include "SkData.h"
#include "SkDecodingImageGenerator.h"
#include "SkForceLinking.h"
#include "SkImageDecoder.h"
#include "SkOSFile.h"
#include "SkRandom.h"
#include "SkStream.h"
#include "Test.h"
__SK_FORCE_IMAGE_DECODER_LINKING;
/**
* First, make sure that writing an 8-bit RGBA KTX file and then
* reading it produces the same bitmap.
*/
DEF_TEST(KtxReadWrite, reporter) {
// Random number generator with explicit seed for reproducibility
SkRandom rand(0x1005cbad);
SkBitmap bm8888;
bm8888.allocN32Pixels(128, 128);
uint8_t *pixels = reinterpret_cast<uint8_t*>(bm8888.getPixels());
REPORTER_ASSERT(reporter, pixels);
if (NULL == pixels) {
return;
}
uint8_t *row = pixels;
for (int y = 0; y < bm8888.height(); ++y) {
for (int x = 0; x < bm8888.width(); ++x) {
uint8_t a = rand.nextRangeU(0, 255);
uint8_t r = rand.nextRangeU(0, 255);
uint8_t g = rand.nextRangeU(0, 255);
uint8_t b = rand.nextRangeU(0, 255);
SkPMColor &pixel = *(reinterpret_cast<SkPMColor*>(row + x*sizeof(SkPMColor)));
pixel = SkPreMultiplyARGB(a, r, g, b);
}
row += bm8888.rowBytes();
}
REPORTER_ASSERT(reporter, !(bm8888.empty()));
SkAutoDataUnref encodedData(SkImageEncoder::EncodeData(bm8888, SkImageEncoder::kKTX_Type, 0));
REPORTER_ASSERT(reporter, encodedData);
SkAutoTUnref<SkMemoryStream> stream(SkNEW_ARGS(SkMemoryStream, (encodedData)));
REPORTER_ASSERT(reporter, stream);
SkBitmap decodedBitmap;
bool imageDecodeSuccess = SkImageDecoder::DecodeStream(stream, &decodedBitmap);
REPORTER_ASSERT(reporter, imageDecodeSuccess);
REPORTER_ASSERT(reporter, decodedBitmap.colorType() == bm8888.colorType());
REPORTER_ASSERT(reporter, decodedBitmap.alphaType() == bm8888.alphaType());
REPORTER_ASSERT(reporter, decodedBitmap.width() == bm8888.width());
REPORTER_ASSERT(reporter, decodedBitmap.height() == bm8888.height());
REPORTER_ASSERT(reporter, !(decodedBitmap.empty()));
uint8_t *decodedPixels = reinterpret_cast<uint8_t*>(decodedBitmap.getPixels());
REPORTER_ASSERT(reporter, decodedPixels);
REPORTER_ASSERT(reporter, decodedBitmap.getSize() == bm8888.getSize());
if (NULL == decodedPixels) {
return;
}
REPORTER_ASSERT(reporter, memcmp(decodedPixels, pixels, decodedBitmap.getSize()) == 0);
}
/**
* Next test is to see whether or not reading an unpremultiplied KTX file accurately
* creates a premultiplied buffer...
*/
DEF_TEST(KtxReadUnpremul, reporter) {
static const uint8_t kHalfWhiteKTX[] = {
0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, // First twelve bytes is magic
0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A, // KTX identifier string
0x01, 0x02, 0x03, 0x04, // Then magic endian specifier
0x01, 0x14, 0x00, 0x00, // uint32_t fGLType;
0x01, 0x00, 0x00, 0x00, // uint32_t fGLTypeSize;
0x08, 0x19, 0x00, 0x00, // uint32_t fGLFormat;
0x58, 0x80, 0x00, 0x00, // uint32_t fGLInternalFormat;
0x08, 0x19, 0x00, 0x00, // uint32_t fGLBaseInternalFormat;
0x02, 0x00, 0x00, 0x00, // uint32_t fPixelWidth;
0x02, 0x00, 0x00, 0x00, // uint32_t fPixelHeight;
0x00, 0x00, 0x00, 0x00, // uint32_t fPixelDepth;
0x00, 0x00, 0x00, 0x00, // uint32_t fNumberOfArrayElements;
0x01, 0x00, 0x00, 0x00, // uint32_t fNumberOfFaces;
0x01, 0x00, 0x00, 0x00, // uint32_t fNumberOfMipmapLevels;
0x00, 0x00, 0x00, 0x00, // uint32_t fBytesOfKeyValueData;
0x10, 0x00, 0x00, 0x00, // image size: 2x2 image of RGBA = 4 * 4 = 16 bytes
0xFF, 0xFF, 0xFF, 0x80, // Pixel 1
0xFF, 0xFF, 0xFF, 0x80, // Pixel 2
0xFF, 0xFF, 0xFF, 0x80, // Pixel 3
0xFF, 0xFF, 0xFF, 0x80};// Pixel 4
SkAutoTUnref<SkMemoryStream> stream(
SkNEW_ARGS(SkMemoryStream, (kHalfWhiteKTX, sizeof(kHalfWhiteKTX))));
REPORTER_ASSERT(reporter, stream);
SkBitmap decodedBitmap;
bool imageDecodeSuccess = SkImageDecoder::DecodeStream(stream, &decodedBitmap);
REPORTER_ASSERT(reporter, imageDecodeSuccess);
REPORTER_ASSERT(reporter, decodedBitmap.colorType() == kN32_SkColorType);
REPORTER_ASSERT(reporter, decodedBitmap.alphaType() == kPremul_SkAlphaType);
REPORTER_ASSERT(reporter, decodedBitmap.width() == 2);
REPORTER_ASSERT(reporter, decodedBitmap.height() == 2);
REPORTER_ASSERT(reporter, !(decodedBitmap.empty()));
uint8_t *decodedPixels = reinterpret_cast<uint8_t*>(decodedBitmap.getPixels());
REPORTER_ASSERT(reporter, decodedPixels);
uint8_t *row = decodedPixels;
for (int j = 0; j < decodedBitmap.height(); ++j) {
for (int i = 0; i < decodedBitmap.width(); ++i) {
SkPMColor pixel = *(reinterpret_cast<SkPMColor*>(row + i*sizeof(SkPMColor)));
REPORTER_ASSERT(reporter, SkPreMultiplyARGB(0x80, 0xFF, 0xFF, 0xFF) == pixel);
}
row += decodedBitmap.rowBytes();
}
}
/**
* Finally, make sure that if we get ETC1 data from a PKM file that we can then
* accurately write it out into a KTX file (i.e. transferring the ETC1 data from
* the PKM to the KTX should produce an identical KTX to the one we have on file)
*/
DEF_TEST(KtxReexportPKM, reporter) {
SkString pkmFilename = GetResourcePath("mandrill_128.pkm");
// Load PKM file into a bitmap
SkBitmap etcBitmap;
SkAutoTUnref<SkData> fileData(SkData::NewFromFileName(pkmFilename.c_str()));
if (NULL == fileData) {
SkDebugf("KtxReexportPKM: can't load test file %s\n", pkmFilename.c_str());
return;
}
bool installDiscardablePixelRefSuccess =
SkInstallDiscardablePixelRef(
SkDecodingImageGenerator::Create(
fileData, SkDecodingImageGenerator::Options()), &etcBitmap);
REPORTER_ASSERT(reporter, installDiscardablePixelRefSuccess);
// Write the bitmap out to a KTX file.
SkData *ktxDataPtr = SkImageEncoder::EncodeData(etcBitmap, SkImageEncoder::kKTX_Type, 0);
SkAutoDataUnref newKtxData(ktxDataPtr);
REPORTER_ASSERT(reporter, ktxDataPtr);
// See is this data is identical to data in existing ktx file.
SkString ktxFilename = GetResourcePath("mandrill_128.ktx");
SkAutoDataUnref oldKtxData(SkData::NewFromFileName(ktxFilename.c_str()));
REPORTER_ASSERT(reporter, oldKtxData->equals(newKtxData));
}
|
